Flex Hose
PROTAPE® PUR 330 AS is a lightweight, microbe-resistant, flame-retardant flex hose built for conveying gases along with abrasive dust, powders, and fibers. Constructed from ester-polyurethane reinforced with a spring steel wire helix, it's highly flexible and compressible at a 3:1 ratio, making it easy to route around equipment and through tight runs. Its permanently antistatic wall (in accordance with ISO 8031) makes it a dependable choice for explosion-hazard areas and static-sensitive operations.
This versatile hose suits extraction systems, dust collection and filtration equipment, oil mist extraction, and extraction arms. It's commonly used on printed circuit board drilling machines, vapor return lines, paint and spray mist extraction, textile fiber extraction, and ventilation systems for barns, clean rooms, and semiconductor production. It also performs well in surface-prep operations such as shot blasting, shipyard work, stripping, floor preparation, and grinding, and can serve as an exterior protective hose in heating applications.
Features
- Ester-polyurethane reinforced with spring steel wire
- Lightweight, highly flexible, and compressible 3:1
- Permanently antistatic wall in accordance with ISO 8031
- Flame retardant, UL94-HB and DIN 4102-B1 rated
- Good resistance to oil, gasoline, and chemicals; microbe- and abrasion-resistant
- Working pressure: 1.958 psi; vacuum rating: 0.591-inch Hg
- Wall: 0.025-inch; bend radius: 6.378-inch
- Temperature range: -40°F to 195°F, and short-term to 255°F
- Meets RoHS guideline; ATEX 2014/34/EU (1999/92/EC) and German TRGS 727
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Product Reviews
I worked with Advantek machinery to get 2 15HP open baghouse collectors with quick change hoppers and an inline separator with a self dumping hopper. We had a hiccup during installation but working with Kenzie, we were able to get this fixed quickly and easily. Since installation, everything has ran smoothly. The support given through installation has given me peace of mind knowing that I will have ongoing support for years to come. The inline separator has allowed for my team to only have to clean out our collectors once a week rather than every evening. The support I was given during installation has given me reassurance in my system as my business continues to grow year after year.
Nathan L.
Kenzie, Garren, and Aaron do a great job for all of our customers! They are all very dedicated and go over and above on every job we quote. Many of these jobs are very complicated and they stay focused until the drawings and quote are perfect. Using DuctQuote, we are able to provide a contactor a detailed quote that is far superior to any estimate they could ever prepare. Their team work well with the end user to meet all of the project requirements. They are always willing to put in extra hours to make sure everything is finished before the deadline. We almost never have a problem but when we do they take care of it instantly. If you want to be successful, you should find your own Duct Guys like Kenzie, Garren & Aaron....but you can's have these 3!!!!
Mike K.
In a recent MacRAE’s Growth Challenge Podcast interview, A.C.T. Dust Collectors highlighted how they use advanced 3D design technology to fully model dust collection systems — including complete ductwork layouts — directly over customer facility floor plans. This allows customers to visualize the entire system before installation and ensures proper airflow, safety compliance, and performance. High-quality ductwork is a critical part of that process. Manufacturers like US Duct, known for precision-engineered industrial ducting, play a key role in making these advanced designs work efficiently in real-world applications. Isaias has been a critical reason for this success with US Duct.
Adam A.
15 years of excellence
Bobby P.
We spec and design many of our systems using the US Tubing Product. US Tubing’s design provides a positive seal, no leak installation on demanding applications where a Leak Free Clamp together system is required. It is easy to assemble, looks great and the customer is very satisfied.
Scott S.
Kenzie and Garren are the dream team! They take great care, and respond quickly. If only other companies had such great follow up and communication skills. If you haven't used US Duct yet..... take the leap. You will be glad you did.
Corey M.
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